dotfiles/.config/dwl/xdg-shell-protocol.h

/* Generated by wayland-scanner 1.21.0 */

#ifndef XDG_SHELL_SERVER_PROTOCOL_H
#define XDG_SHELL_SERVER_PROTOCOL_H

#include <stdint.h>
#include <stddef.h>
#include "wayland-server.h"

#ifdef  __cplusplus
extern "C" {
#endif

struct wl_client;
struct wl_resource;

/**
 * @page page_xdg_shell The xdg_shell protocol
 * @section page_ifaces_xdg_shell Interfaces
 * - @subpage page_iface_xdg_wm_base - create desktop-style surfaces
 * - @subpage page_iface_xdg_positioner - child surface positioner
 * - @subpage page_iface_xdg_surface - desktop user interface surface base interface
 * - @subpage page_iface_xdg_toplevel - toplevel surface
 * - @subpage page_iface_xdg_popup - short-lived, popup surfaces for menus
 * @section page_copyright_xdg_shell Copyright
 * <pre>
 *
 * Copyright © 2008-2013 Kristian Høgsberg
 * Copyright © 2013      Rafael Antognolli
 * Copyright © 2013      Jasper St. Pierre
 * Copyright © 2010-2013 Intel Corporation
 * Copyright © 2015-2017 Samsung Electronics Co., Ltd
 * Copyright © 2015-2017 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 * </pre>
 */
struct wl_output;
struct wl_seat;
struct wl_surface;
struct xdg_popup;
struct xdg_positioner;
struct xdg_surface;
struct xdg_toplevel;
struct xdg_wm_base;

#ifndef XDG_WM_BASE_INTERFACE
#define XDG_WM_BASE_INTERFACE
/**
 * @page page_iface_xdg_wm_base xdg_wm_base
 * @section page_iface_xdg_wm_base_desc Description
 *
 * The xdg_wm_base interface is exposed as a global object enabling clients
 * to turn their wl_surfaces into windows in a desktop environment. It
 * defines the basic functionality needed for clients and the compositor to
 * create windows that can be dragged, resized, maximized, etc, as well as
 * creating transient windows such as popup menus.
 * @section page_iface_xdg_wm_base_api API
 * See @ref iface_xdg_wm_base.
 */
/**
 * @defgroup iface_xdg_wm_base The xdg_wm_base interface
 *
 * The xdg_wm_base interface is exposed as a global object enabling clients
 * to turn their wl_surfaces into windows in a desktop environment. It
 * defines the basic functionality needed for clients and the compositor to
 * create windows that can be dragged, resized, maximized, etc, as well as
 * creating transient windows such as popup menus.
 */
extern const struct wl_interface xdg_wm_base_interface;
#endif
#ifndef XDG_POSITIONER_INTERFACE
#define XDG_POSITIONER_INTERFACE
/**
 * @page page_iface_xdg_positioner xdg_positioner
 * @section page_iface_xdg_positioner_desc Description
 *
 * The xdg_positioner provides a collection of rules for the placement of a
 * child surface relative to a parent surface. Rules can be defined to ensure
 * the child surface remains within the visible area's borders, and to
 * specify how the child surface changes its position, such as sliding along
 * an axis, or flipping around a rectangle. These positioner-created rules are
 * constrained by the requirement that a child surface must intersect with or
 * be at least partially adjacent to its parent surface.
 *
 * See the various requests for details about possible rules.
 *
 * At the time of the request, the compositor makes a copy of the rules
 * specified by the xdg_positioner. Thus, after the request is complete the
 * xdg_positioner object can be destroyed or reused; further changes to the
 * object will have no effect on previous usages.
 *
 * For an xdg_positioner object to be considered complete, it must have a
 * non-zero size set by set_size, and a non-zero anchor rectangle set by
 * set_anchor_rect. Passing an incomplete xdg_positioner object when
 * positioning a surface raises an invalid_positioner error.
 * @section page_iface_xdg_positioner_api API
 * See @ref iface_xdg_positioner.
 */
/**
 * @defgroup iface_xdg_positioner The xdg_positioner interface
 *
 * The xdg_positioner provides a collection of rules for the placement of a
 * child surface relative to a parent surface. Rules can be defined to ensure
 * the child surface remains within the visible area's borders, and to
 * specify how the child surface changes its position, such as sliding along
 * an axis, or flipping around a rectangle. These positioner-created rules are
 * constrained by the requirement that a child surface must intersect with or
 * be at least partially adjacent to its parent surface.
 *
 * See the various requests for details about possible rules.
 *
 * At the time of the request, the compositor makes a copy of the rules
 * specified by the xdg_positioner. Thus, after the request is complete the
 * xdg_positioner object can be destroyed or reused; further changes to the
 * object will have no effect on previous usages.
 *
 * For an xdg_positioner object to be considered complete, it must have a
 * non-zero size set by set_size, and a non-zero anchor rectangle set by
 * set_anchor_rect. Passing an incomplete xdg_positioner object when
 * positioning a surface raises an invalid_positioner error.
 */
extern const struct wl_interface xdg_positioner_interface;
#endif
#ifndef XDG_SURFACE_INTERFACE
#define XDG_SURFACE_INTERFACE
/**
 * @page page_iface_xdg_surface xdg_surface
 * @section page_iface_xdg_surface_desc Description
 *
 * An interface that may be implemented by a wl_surface, for
 * implementations that provide a desktop-style user interface.
 *
 * It provides a base set of functionality required to construct user
 * interface elements requiring management by the compositor, such as
 * toplevel windows, menus, etc. The types of functionality are split into
 * xdg_surface roles.
 *
 * Creating an xdg_surface does not set the role for a wl_surface. In order
 * to map an xdg_surface, the client must create a role-specific object
 * using, e.g., get_toplevel, get_popup. The wl_surface for any given
 * xdg_surface can have at most one role, and may not be assigned any role
 * not based on xdg_surface.
 *
 * A role must be assigned before any other requests are made to the
 * xdg_surface object.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_surface state to take effect.
 *
 * Creating an xdg_surface from a wl_surface which has a buffer attached or
 * committed is a client error, and any attempts by a client to attach or
 * manipulate a buffer prior to the first xdg_surface.configure call must
 * also be treated as errors.
 *
 * After creating a role-specific object and setting it up, the client must
 * perform an initial commit without any buffer attached. The compositor
 * will reply with an xdg_surface.configure event. The client must
 * acknowledge it and is then allowed to attach a buffer to map the surface.
 *
 * Mapping an xdg_surface-based role surface is defined as making it
 * possible for the surface to be shown by the compositor. Note that
 * a mapped surface is not guaranteed to be visible once it is mapped.
 *
 * For an xdg_surface to be mapped by the compositor, the following
 * conditions must be met:
 * (1) the client has assigned an xdg_surface-based role to the surface
 * (2) the client has set and committed the xdg_surface state and the
 * role-dependent state to the surface
 * (3) the client has committed a buffer to the surface
 *
 * A newly-unmapped surface is considered to have met condition (1) out
 * of the 3 required conditions for mapping a surface if its role surface
 * has not been destroyed, i.e. the client must perform the initial commit
 * again before attaching a buffer.
 * @section page_iface_xdg_surface_api API
 * See @ref iface_xdg_surface.
 */
/**
 * @defgroup iface_xdg_surface The xdg_surface interface
 *
 * An interface that may be implemented by a wl_surface, for
 * implementations that provide a desktop-style user interface.
 *
 * It provides a base set of functionality required to construct user
 * interface elements requiring management by the compositor, such as
 * toplevel windows, menus, etc. The types of functionality are split into
 * xdg_surface roles.
 *
 * Creating an xdg_surface does not set the role for a wl_surface. In order
 * to map an xdg_surface, the client must create a role-specific object
 * using, e.g., get_toplevel, get_popup. The wl_surface for any given
 * xdg_surface can have at most one role, and may not be assigned any role
 * not based on xdg_surface.
 *
 * A role must be assigned before any other requests are made to the
 * xdg_surface object.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_surface state to take effect.
 *
 * Creating an xdg_surface from a wl_surface which has a buffer attached or
 * committed is a client error, and any attempts by a client to attach or
 * manipulate a buffer prior to the first xdg_surface.configure call must
 * also be treated as errors.
 *
 * After creating a role-specific object and setting it up, the client must
 * perform an initial commit without any buffer attached. The compositor
 * will reply with an xdg_surface.configure event. The client must
 * acknowledge it and is then allowed to attach a buffer to map the surface.
 *
 * Mapping an xdg_surface-based role surface is defined as making it
 * possible for the surface to be shown by the compositor. Note that
 * a mapped surface is not guaranteed to be visible once it is mapped.
 *
 * For an xdg_surface to be mapped by the compositor, the following
 * conditions must be met:
 * (1) the client has assigned an xdg_surface-based role to the surface
 * (2) the client has set and committed the xdg_surface state and the
 * role-dependent state to the surface
 * (3) the client has committed a buffer to the surface
 *
 * A newly-unmapped surface is considered to have met condition (1) out
 * of the 3 required conditions for mapping a surface if its role surface
 * has not been destroyed, i.e. the client must perform the initial commit
 * again before attaching a buffer.
 */
extern const struct wl_interface xdg_surface_interface;
#endif
#ifndef XDG_TOPLEVEL_INTERFACE
#define XDG_TOPLEVEL_INTERFACE
/**
 * @page page_iface_xdg_toplevel xdg_toplevel
 * @section page_iface_xdg_toplevel_desc Description
 *
 * This interface defines an xdg_surface role which allows a surface to,
 * among other things, set window-like properties such as maximize,
 * fullscreen, and minimize, set application-specific metadata like title and
 * id, and well as trigger user interactive operations such as interactive
 * resize and move.
 *
 * Unmapping an xdg_toplevel means that the surface cannot be shown
 * by the compositor until it is explicitly mapped again.
 * All active operations (e.g., move, resize) are canceled and all
 * attributes (e.g. title, state, stacking, ...) are discarded for
 * an xdg_toplevel surface when it is unmapped. The xdg_toplevel returns to
 * the state it had right after xdg_surface.get_toplevel. The client
 * can re-map the toplevel by perfoming a commit without any buffer
 * attached, waiting for a configure event and handling it as usual (see
 * xdg_surface description).
 *
 * Attaching a null buffer to a toplevel unmaps the surface.
 * @section page_iface_xdg_toplevel_api API
 * See @ref iface_xdg_toplevel.
 */
/**
 * @defgroup iface_xdg_toplevel The xdg_toplevel interface
 *
 * This interface defines an xdg_surface role which allows a surface to,
 * among other things, set window-like properties such as maximize,
 * fullscreen, and minimize, set application-specific metadata like title and
 * id, and well as trigger user interactive operations such as interactive
 * resize and move.
 *
 * Unmapping an xdg_toplevel means that the surface cannot be shown
 * by the compositor until it is explicitly mapped again.
 * All active operations (e.g., move, resize) are canceled and all
 * attributes (e.g. title, state, stacking, ...) are discarded for
 * an xdg_toplevel surface when it is unmapped. The xdg_toplevel returns to
 * the state it had right after xdg_surface.get_toplevel. The client
 * can re-map the toplevel by perfoming a commit without any buffer
 * attached, waiting for a configure event and handling it as usual (see
 * xdg_surface description).
 *
 * Attaching a null buffer to a toplevel unmaps the surface.
 */
extern const struct wl_interface xdg_toplevel_interface;
#endif
#ifndef XDG_POPUP_INTERFACE
#define XDG_POPUP_INTERFACE
/**
 * @page page_iface_xdg_popup xdg_popup
 * @section page_iface_xdg_popup_desc Description
 *
 * A popup surface is a short-lived, temporary surface. It can be used to
 * implement for example menus, popovers, tooltips and other similar user
 * interface concepts.
 *
 * A popup can be made to take an explicit grab. See xdg_popup.grab for
 * details.
 *
 * When the popup is dismissed, a popup_done event will be sent out, and at
 * the same time the surface will be unmapped. See the xdg_popup.popup_done
 * event for details.
 *
 * Explicitly destroying the xdg_popup object will also dismiss the popup and
 * unmap the surface. Clients that want to dismiss the popup when another
 * surface of their own is clicked should dismiss the popup using the destroy
 * request.
 *
 * A newly created xdg_popup will be stacked on top of all previously created
 * xdg_popup surfaces associated with the same xdg_toplevel.
 *
 * The parent of an xdg_popup must be mapped (see the xdg_surface
 * description) before the xdg_popup itself.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_popup state to take effect.
 * @section page_iface_xdg_popup_api API
 * See @ref iface_xdg_popup.
 */
/**
 * @defgroup iface_xdg_popup The xdg_popup interface
 *
 * A popup surface is a short-lived, temporary surface. It can be used to
 * implement for example menus, popovers, tooltips and other similar user
 * interface concepts.
 *
 * A popup can be made to take an explicit grab. See xdg_popup.grab for
 * details.
 *
 * When the popup is dismissed, a popup_done event will be sent out, and at
 * the same time the surface will be unmapped. See the xdg_popup.popup_done
 * event for details.
 *
 * Explicitly destroying the xdg_popup object will also dismiss the popup and
 * unmap the surface. Clients that want to dismiss the popup when another
 * surface of their own is clicked should dismiss the popup using the destroy
 * request.
 *
 * A newly created xdg_popup will be stacked on top of all previously created
 * xdg_popup surfaces associated with the same xdg_toplevel.
 *
 * The parent of an xdg_popup must be mapped (see the xdg_surface
 * description) before the xdg_popup itself.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_popup state to take effect.
 */
extern const struct wl_interface xdg_popup_interface;
#endif

#ifndef XDG_WM_BASE_ERROR_ENUM
#define XDG_WM_BASE_ERROR_ENUM
enum xdg_wm_base_error {
	/**
	 * given wl_surface has another role
	 */
	XDG_WM_BASE_ERROR_ROLE = 0,
	/**
	 * xdg_wm_base was destroyed before children
	 */
	XDG_WM_BASE_ERROR_DEFUNCT_SURFACES = 1,
	/**
	 * the client tried to map or destroy a non-topmost popup
	 */
	XDG_WM_BASE_ERROR_NOT_THE_TOPMOST_POPUP = 2,
	/**
	 * the client specified an invalid popup parent surface
	 */
	XDG_WM_BASE_ERROR_INVALID_POPUP_PARENT = 3,
	/**
	 * the client provided an invalid surface state
	 */
	XDG_WM_BASE_ERROR_INVALID_SURFACE_STATE = 4,
	/**
	 * the client provided an invalid positioner
	 */
	XDG_WM_BASE_ERROR_INVALID_POSITIONER = 5,
	/**
	 * the client didn’t respond to a ping event in time
	 */
	XDG_WM_BASE_ERROR_UNRESPONSIVE = 6,
};
#endif /* XDG_WM_BASE_ERROR_ENUM */

/**
 * @ingroup iface_xdg_wm_base
 * @struct xdg_wm_base_interface
 */
struct xdg_wm_base_interface {
	/**
	 * destroy xdg_wm_base
	 *
	 * Destroy this xdg_wm_base object.
	 *
	 * Destroying a bound xdg_wm_base object while there are surfaces
	 * still alive created by this xdg_wm_base object instance is
	 * illegal and will result in a defunct_surfaces error.
	 */
	void (*destroy)(struct wl_client *client,
			struct wl_resource *resource);
	/**
	 * create a positioner object
	 *
	 * Create a positioner object. A positioner object is used to
	 * position surfaces relative to some parent surface. See the
	 * interface description and xdg_surface.get_popup for details.
	 */
	void (*create_positioner)(struct wl_client *client,
				  struct wl_resource *resource,
				  uint32_t id);
	/**
	 * create a shell surface from a surface
	 *
	 * This creates an xdg_surface for the given surface. While
	 * xdg_surface itself is not a role, the corresponding surface may
	 * only be assigned a role extending xdg_surface, such as
	 * xdg_toplevel or xdg_popup. It is illegal to create an
	 * xdg_surface for a wl_surface which already has an assigned role
	 * and this will result in a role error.
	 *
	 * This creates an xdg_surface for the given surface. An
	 * xdg_surface is used as basis to define a role to a given
	 * surface, such as xdg_toplevel or xdg_popup. It also manages
	 * functionality shared between xdg_surface based surface roles.
	 *
	 * See the documentation of xdg_surface for more details about what
	 * an xdg_surface is and how it is used.
	 */
	void (*get_xdg_surface)(struct wl_client *client,
				struct wl_resource *resource,
				uint32_t id,
				struct wl_resource *surface);
	/**
	 * respond to a ping event
	 *
	 * A client must respond to a ping event with a pong request or
	 * the client may be deemed unresponsive. See xdg_wm_base.ping and
	 * xdg_wm_base.error.unresponsive.
	 * @param serial serial of the ping event
	 */
	void (*pong)(struct wl_client *client,
		     struct wl_resource *resource,
		     uint32_t serial);
};

#define XDG_WM_BASE_PING 0

/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_PING_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_CREATE_POSITIONER_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_GET_XDG_SURFACE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_PONG_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_wm_base
 * Sends an ping event to the client owning the resource.
 * @param resource_ The client's resource
 * @param serial pass this to the pong request
 */
static inline void
xdg_wm_base_send_ping(struct wl_resource *resource_, uint32_t serial)
{
	wl_resource_post_event(resource_, XDG_WM_BASE_PING, serial);
}

#ifndef XDG_POSITIONER_ERROR_ENUM
#define XDG_POSITIONER_ERROR_ENUM
enum xdg_positioner_error {
	/**
	 * invalid input provided
	 */
	XDG_POSITIONER_ERROR_INVALID_INPUT = 0,
};
#endif /* XDG_POSITIONER_ERROR_ENUM */

#ifndef XDG_POSITIONER_ANCHOR_ENUM
#define XDG_POSITIONER_ANCHOR_ENUM
enum xdg_positioner_anchor {
	XDG_POSITIONER_ANCHOR_NONE = 0,
	XDG_POSITIONER_ANCHOR_TOP = 1,
	XDG_POSITIONER_ANCHOR_BOTTOM = 2,
	XDG_POSITIONER_ANCHOR_LEFT = 3,
	XDG_POSITIONER_ANCHOR_RIGHT = 4,
	XDG_POSITIONER_ANCHOR_TOP_LEFT = 5,
	XDG_POSITIONER_ANCHOR_BOTTOM_LEFT = 6,
	XDG_POSITIONER_ANCHOR_TOP_RIGHT = 7,
	XDG_POSITIONER_ANCHOR_BOTTOM_RIGHT = 8,
};
#endif /* XDG_POSITIONER_ANCHOR_ENUM */

#ifndef XDG_POSITIONER_GRAVITY_ENUM
#define XDG_POSITIONER_GRAVITY_ENUM
enum xdg_positioner_gravity {
	XDG_POSITIONER_GRAVITY_NONE = 0,
	XDG_POSITIONER_GRAVITY_TOP = 1,
	XDG_POSITIONER_GRAVITY_BOTTOM = 2,
	XDG_POSITIONER_GRAVITY_LEFT = 3,
	XDG_POSITIONER_GRAVITY_RIGHT = 4,
	XDG_POSITIONER_GRAVITY_TOP_LEFT = 5,
	XDG_POSITIONER_GRAVITY_BOTTOM_LEFT = 6,
	XDG_POSITIONER_GRAVITY_TOP_RIGHT = 7,
	XDG_POSITIONER_GRAVITY_BOTTOM_RIGHT = 8,
};
#endif /* XDG_POSITIONER_GRAVITY_ENUM */

#ifndef XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM
#define XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM
/**
 * @ingroup iface_xdg_positioner
 * constraint adjustments
 *
 * The constraint adjustment value define ways the compositor will adjust
 * the position of the surface, if the unadjusted position would result
 * in the surface being partly constrained.
 *
 * Whether a surface is considered 'constrained' is left to the compositor
 * to determine. For example, the surface may be partly outside the
 * compositor's defined 'work area', thus necessitating the child surface's
 * position be adjusted until it is entirely inside the work area.
 *
 * The adjustments can be combined, according to a defined precedence: 1)
 * Flip, 2) Slide, 3) Resize.
 */
enum xdg_positioner_constraint_adjustment {
	/**
	 * don't move the child surface when constrained
	 *
	 * Don't alter the surface position even if it is constrained on
	 * some axis, for example partially outside the edge of an output.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_NONE = 0,
	/**
	 * move along the x axis until unconstrained
	 *
	 * Slide the surface along the x axis until it is no longer
	 * constrained.
	 *
	 * First try to slide towards the direction of the gravity on the x
	 * axis until either the edge in the opposite direction of the
	 * gravity is unconstrained or the edge in the direction of the
	 * gravity is constrained.
	 *
	 * Then try to slide towards the opposite direction of the gravity
	 * on the x axis until either the edge in the direction of the
	 * gravity is unconstrained or the edge in the opposite direction
	 * of the gravity is constrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X = 1,
	/**
	 * move along the y axis until unconstrained
	 *
	 * Slide the surface along the y axis until it is no longer
	 * constrained.
	 *
	 * First try to slide towards the direction of the gravity on the y
	 * axis until either the edge in the opposite direction of the
	 * gravity is unconstrained or the edge in the direction of the
	 * gravity is constrained.
	 *
	 * Then try to slide towards the opposite direction of the gravity
	 * on the y axis until either the edge in the direction of the
	 * gravity is unconstrained or the edge in the opposite direction
	 * of the gravity is constrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_Y = 2,
	/**
	 * invert the anchor and gravity on the x axis
	 *
	 * Invert the anchor and gravity on the x axis if the surface is
	 * constrained on the x axis. For example, if the left edge of the
	 * surface is constrained, the gravity is 'left' and the anchor is
	 * 'left', change the gravity to 'right' and the anchor to 'right'.
	 *
	 * If the adjusted position also ends up being constrained, the
	 * resulting position of the flip_x adjustment will be the one
	 * before the adjustment.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_X = 4,
	/**
	 * invert the anchor and gravity on the y axis
	 *
	 * Invert the anchor and gravity on the y axis if the surface is
	 * constrained on the y axis. For example, if the bottom edge of
	 * the surface is constrained, the gravity is 'bottom' and the
	 * anchor is 'bottom', change the gravity to 'top' and the anchor
	 * to 'top'.
	 *
	 * The adjusted position is calculated given the original anchor
	 * rectangle and offset, but with the new flipped anchor and
	 * gravity values.
	 *
	 * If the adjusted position also ends up being constrained, the
	 * resulting position of the flip_y adjustment will be the one
	 * before the adjustment.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_Y = 8,
	/**
	 * horizontally resize the surface
	 *
	 * Resize the surface horizontally so that it is completely
	 * unconstrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_RESIZE_X = 16,
	/**
	 * vertically resize the surface
	 *
	 * Resize the surface vertically so that it is completely
	 * unconstrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_RESIZE_Y = 32,
};
#endif /* XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM */

/**
 * @ingroup iface_xdg_positioner
 * @struct xdg_positioner_interface
 */
struct xdg_positioner_interface {
	/**
	 * destroy the xdg_positioner object
	 *
	 * Notify the compositor that the xdg_positioner will no longer
	 * be used.
	 */
	void (*destroy)(struct wl_client *client,
			struct wl_resource *resource);
	/**
	 * set the size of the to-be positioned rectangle
	 *
	 * Set the size of the surface that is to be positioned with the
	 * positioner object. The size is in surface-local coordinates and
	 * corresponds to the window geometry. See
	 * xdg_surface.set_window_geometry.
	 *
	 * If a zero or negative size is set the invalid_input error is
	 * raised.
	 * @param width width of positioned rectangle
	 * @param height height of positioned rectangle
	 */
	void (*set_size)(struct wl_client *client,
			 struct wl_resource *resource,
			 int32_t width,
			 int32_t height);
	/**
	 * set the anchor rectangle within the parent surface
	 *
	 * Specify the anchor rectangle within the parent surface that
	 * the child surface will be placed relative to. The rectangle is
	 * relative to the window geometry as defined by
	 * xdg_surface.set_window_geometry of the parent surface.
	 *
	 * When the xdg_positioner object is used to position a child
	 * surface, the anchor rectangle may not extend outside the window
	 * geometry of the positioned child's parent surface.
	 *
	 * If a negative size is set the invalid_input error is raised.
	 * @param x x position of anchor rectangle
	 * @param y y position of anchor rectangle
	 * @param width width of anchor rectangle
	 * @param height height of anchor rectangle
	 */
	void (*set_anchor_rect)(struct wl_client *client,
				struct wl_resource *resource,
				int32_t x,
				int32_t y,
				int32_t width,
				int32_t height);
	/**
	 * set anchor rectangle anchor
	 *
	 * Defines the anchor point for the anchor rectangle. The
	 * specified anchor is used derive an anchor point that the child
	 * surface will be positioned relative to. If a corner anchor is
	 * set (e.g. 'top_left' or 'bottom_right'), the anchor point will
	 * be at the specified corner; otherwise, the derived anchor point
	 * will be centered on the specified edge, or in the center of the
	 * anchor rectangle if no edge is specified.
	 * @param anchor anchor
	 */
	void (*set_anchor)(struct wl_client *client,
			   struct wl_resource *resource,
			   uint32_t anchor);
	/**
	 * set child surface gravity
	 *
	 * Defines in what direction a surface should be positioned,
	 * relative to the anchor point of the parent surface. If a corner
	 * gravity is specified (e.g. 'bottom_right' or 'top_left'), then
	 * the child surface will be placed towards the specified gravity;
	 * otherwise, the child surface will be centered over the anchor
	 * point on any axis that had no gravity specified. If the gravity
	 * is not in the ‘gravity’ enum, an invalid_input error is
	 * raised.
	 * @param gravity gravity direction
	 */
	void (*set_gravity)(struct wl_client *client,
			    struct wl_resource *resource,
			    uint32_t gravity);
	/**
	 * set the adjustment to be done when constrained
	 *
	 * Specify how the window should be positioned if the originally
	 * intended position caused the surface to be constrained, meaning
	 * at least partially outside positioning boundaries set by the
	 * compositor. The adjustment is set by constructing a bitmask
	 * describing the adjustment to be made when the surface is
	 * constrained on that axis.
	 *
	 * If no bit for one axis is set, the compositor will assume that
	 * the child surface should not change its position on that axis
	 * when constrained.
	 *
	 * If more than one bit for one axis is set, the order of how
	 * adjustments are applied is specified in the corresponding
	 * adjustment descriptions.
	 *
	 * The default adjustment is none.
	 * @param constraint_adjustment bit mask of constraint adjustments
	 */
	void (*set_constraint_adjustment)(struct wl_client *client,
					  struct wl_resource *resource,
					  uint32_t constraint_adjustment);
	/**
	 * set surface position offset
	 *
	 * Specify the surface position offset relative to the position
	 * of the anchor on the anchor rectangle and the anchor on the
	 * surface. For example if the anchor of the anchor rectangle is at
	 * (x, y), the surface has the gravity bottom|right, and the offset
	 * is (ox, oy), the calculated surface position will be (x + ox, y
	 * + oy). The offset position of the surface is the one used for
	 * constraint testing. See set_constraint_adjustment.
	 *
	 * An example use case is placing a popup menu on top of a user
	 * interface element, while aligning the user interface element of
	 * the parent surface with some user interface element placed
	 * somewhere in the popup surface.
	 * @param x surface position x offset
	 * @param y surface position y offset
	 */
	void (*set_offset)(struct wl_client *client,
			   struct wl_resource *resource,
			   int32_t x,
			   int32_t y);
	/**
	 * continuously reconstrain the surface
	 *
	 * When set reactive, the surface is reconstrained if the
	 * conditions used for constraining changed, e.g. the parent window
	 * moved.
	 *
	 * If the conditions changed and the popup was reconstrained, an
	 * xdg_popup.configure event is sent with updated geometry,
	 * followed by an xdg_surface.configure event.
	 * @since 3
	 */
	void (*set_reactive)(struct wl_client *client,
			     struct wl_resource *resource);
	/**
	 * 
	 *
	 * Set the parent window geometry the compositor should use when
	 * positioning the popup. The compositor may use this information
	 * to determine the future state the popup should be constrained
	 * using. If this doesn't match the dimension of the parent the
	 * popup is eventually positioned against, the behavior is
	 * undefined.
	 *
	 * The arguments are given in the surface-local coordinate space.
	 * @param parent_width future window geometry width of parent
	 * @param parent_height future window geometry height of parent
	 * @since 3
	 */
	void (*set_parent_size)(struct wl_client *client,
				struct wl_resource *resource,
				int32_t parent_width,
				int32_t parent_height);
	/**
	 * set parent configure this is a response to
	 *
	 * Set the serial of an xdg_surface.configure event this
	 * positioner will be used in response to. The compositor may use
	 * this information together with set_parent_size to determine what
	 * future state the popup should be constrained using.
	 * @param serial serial of parent configure event
	 * @since 3
	 */
	void (*set_parent_configure)(struct wl_client *client,
				     struct wl_resource *resource,
				     uint32_t serial);
};


/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_ANCHOR_RECT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_ANCHOR_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_GRAVITY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_CONSTRAINT_ADJUSTMENT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_OFFSET_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_REACTIVE_SINCE_VERSION 3
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_PARENT_SIZE_SINCE_VERSION 3
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_PARENT_CONFIGURE_SINCE_VERSION 3

#ifndef XDG_SURFACE_ERROR_ENUM
#define XDG_SURFACE_ERROR_ENUM
enum xdg_surface_error {
	/**
	 * Surface was not fully constructed
	 */
	XDG_SURFACE_ERROR_NOT_CONSTRUCTED = 1,
	/**
	 * Surface was already constructed
	 */
	XDG_SURFACE_ERROR_ALREADY_CONSTRUCTED = 2,
	/**
	 * Attaching a buffer to an unconfigured surface
	 */
	XDG_SURFACE_ERROR_UNCONFIGURED_BUFFER = 3,
	/**
	 * Invalid serial number when acking a configure event
	 */
	XDG_SURFACE_ERROR_INVALID_SERIAL = 4,
	/**
	 * Width or height was zero or negative
	 */
	XDG_SURFACE_ERROR_INVALID_SIZE = 5,
};
#endif /* XDG_SURFACE_ERROR_ENUM */

/**
 * @ingroup iface_xdg_surface
 * @struct xdg_surface_interface
 */
struct xdg_surface_interface {
	/**
	 * destroy the xdg_surface
	 *
	 * Destroy the xdg_surface object. An xdg_surface must only be
	 * destroyed after its role object has been destroyed.
	 */
	void (*destroy)(struct wl_client *client,
			struct wl_resource *resource);
	/**
	 * assign the xdg_toplevel surface role
	 *
	 * This creates an xdg_toplevel object for the given xdg_surface
	 * and gives the associated wl_surface the xdg_toplevel role.
	 *
	 * See the documentation of xdg_toplevel for more details about
	 * what an xdg_toplevel is and how it is used.
	 */
	void (*get_toplevel)(struct wl_client *client,
			     struct wl_resource *resource,
			     uint32_t id);
	/**
	 * assign the xdg_popup surface role
	 *
	 * This creates an xdg_popup object for the given xdg_surface and
	 * gives the associated wl_surface the xdg_popup role.
	 *
	 * If null is passed as a parent, a parent surface must be
	 * specified using some other protocol, before committing the
	 * initial state.
	 *
	 * See the documentation of xdg_popup for more details about what
	 * an xdg_popup is and how it is used.
	 */
	void (*get_popup)(struct wl_client *client,
			  struct wl_resource *resource,
			  uint32_t id,
			  struct wl_resource *parent,
			  struct wl_resource *positioner);
	/**
	 * set the new window geometry
	 *
	 * The window geometry of a surface is its "visible bounds" from
	 * the user's perspective. Client-side decorations often have
	 * invisible portions like drop-shadows which should be ignored for
	 * the purposes of aligning, placing and constraining windows.
	 *
	 * The window geometry is double buffered, and will be applied at
	 * the time wl_surface.commit of the corresponding wl_surface is
	 * called.
	 *
	 * When maintaining a position, the compositor should treat the (x,
	 * y) coordinate of the window geometry as the top left corner of
	 * the window. A client changing the (x, y) window geometry
	 * coordinate should in general not alter the position of the
	 * window.
	 *
	 * Once the window geometry of the surface is set, it is not
	 * possible to unset it, and it will remain the same until
	 * set_window_geometry is called again, even if a new subsurface or
	 * buffer is attached.
	 *
	 * If never set, the value is the full bounds of the surface,
	 * including any subsurfaces. This updates dynamically on every
	 * commit. This unset is meant for extremely simple clients.
	 *
	 * The arguments are given in the surface-local coordinate space of
	 * the wl_surface associated with this xdg_surface.
	 *
	 * The width and height must be greater than zero. Setting an
	 * invalid size will raise an invalid_size error. When applied, the
	 * effective window geometry will be the set window geometry
	 * clamped to the bounding rectangle of the combined geometry of
	 * the surface of the xdg_surface and the associated subsurfaces.
	 */
	void (*set_window_geometry)(struct wl_client *client,
				    struct wl_resource *resource,
				    int32_t x,
				    int32_t y,
				    int32_t width,
				    int32_t height);
	/**
	 * ack a configure event
	 *
	 * When a configure event is received, if a client commits the
	 * surface in response to the configure event, then the client must
	 * make an ack_configure request sometime before the commit
	 * request, passing along the serial of the configure event.
	 *
	 * For instance, for toplevel surfaces the compositor might use
	 * this information to move a surface to the top left only when the
	 * client has drawn itself for the maximized or fullscreen state.
	 *
	 * If the client receives multiple configure events before it can
	 * respond to one, it only has to ack the last configure event.
	 * Acking a configure event that was never sent raises an
	 * invalid_serial error.
	 *
	 * A client is not required to commit immediately after sending an
	 * ack_configure request - it may even ack_configure several times
	 * before its next surface commit.
	 *
	 * A client may send multiple ack_configure requests before
	 * committing, but only the last request sent before a commit
	 * indicates which configure event the client really is responding
	 * to.
	 *
	 * Sending an ack_configure request consumes the serial number sent
	 * with the request, as well as serial numbers sent by all
	 * configure events sent on this xdg_surface prior to the configure
	 * event referenced by the committed serial.
	 *
	 * It is an error to issue multiple ack_configure requests
	 * referencing a serial from the same configure event, or to issue
	 * an ack_configure request referencing a serial from a configure
	 * event issued before the event identified by the last
	 * ack_configure request for the same xdg_surface. Doing so will
	 * raise an invalid_serial error.
	 * @param serial the serial from the configure event
	 */
	void (*ack_configure)(struct wl_client *client,
			      struct wl_resource *resource,
			      uint32_t serial);
};

#define XDG_SURFACE_CONFIGURE 0

/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_CONFIGURE_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_GET_TOPLEVEL_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_GET_POPUP_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_SET_WINDOW_GEOMETRY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_ACK_CONFIGURE_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_surface
 * Sends an configure event to the client owning the resource.
 * @param resource_ The client's resource
 * @param serial serial of the configure event
 */
static inline void
xdg_surface_send_configure(struct wl_resource *resource_, uint32_t serial)
{
	wl_resource_post_event(resource_, XDG_SURFACE_CONFIGURE, serial);
}

#ifndef XDG_TOPLEVEL_ERROR_ENUM
#define XDG_TOPLEVEL_ERROR_ENUM
enum xdg_toplevel_error {
	/**
	 * provided value is         not a valid variant of the resize_edge enum
	 */
	XDG_TOPLEVEL_ERROR_INVALID_RESIZE_EDGE = 0,
	/**
	 * invalid parent toplevel
	 */
	XDG_TOPLEVEL_ERROR_INVALID_PARENT = 1,
	/**
	 * client provided an invalid min or max size
	 */
	XDG_TOPLEVEL_ERROR_INVALID_SIZE = 2,
};
#endif /* XDG_TOPLEVEL_ERROR_ENUM */

#ifndef XDG_TOPLEVEL_RESIZE_EDGE_ENUM
#define XDG_TOPLEVEL_RESIZE_EDGE_ENUM
/**
 * @ingroup iface_xdg_toplevel
 * edge values for resizing
 *
 * These values are used to indicate which edge of a surface
 * is being dragged in a resize operation.
 */
enum xdg_toplevel_resize_edge {
	XDG_TOPLEVEL_RESIZE_EDGE_NONE = 0,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP = 1,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM = 2,
	XDG_TOPLEVEL_RESIZE_EDGE_LEFT = 4,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT = 5,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT = 6,
	XDG_TOPLEVEL_RESIZE_EDGE_RIGHT = 8,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT = 9,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT = 10,
};
#endif /* XDG_TOPLEVEL_RESIZE_EDGE_ENUM */

#ifndef XDG_TOPLEVEL_STATE_ENUM
#define XDG_TOPLEVEL_STATE_ENUM
/**
 * @ingroup iface_xdg_toplevel
 * types of state on the surface
 *
 * The different state values used on the surface. This is designed for
 * state values like maximized, fullscreen. It is paired with the
 * configure event to ensure that both the client and the compositor
 * setting the state can be synchronized.
 *
 * States set in this way are double-buffered. They will get applied on
 * the next commit.
 */
enum xdg_toplevel_state {
	/**
	 * the surface is maximized
	 * the surface is maximized
	 *
	 * The surface is maximized. The window geometry specified in the
	 * configure event must be obeyed by the client.
	 *
	 * The client should draw without shadow or other decoration
	 * outside of the window geometry.
	 */
	XDG_TOPLEVEL_STATE_MAXIMIZED = 1,
	/**
	 * the surface is fullscreen
	 * the surface is fullscreen
	 *
	 * The surface is fullscreen. The window geometry specified in
	 * the configure event is a maximum; the client cannot resize
	 * beyond it. For a surface to cover the whole fullscreened area,
	 * the geometry dimensions must be obeyed by the client. For more
	 * details, see xdg_toplevel.set_fullscreen.
	 */
	XDG_TOPLEVEL_STATE_FULLSCREEN = 2,
	/**
	 * the surface is being resized
	 * the surface is being resized
	 *
	 * The surface is being resized. The window geometry specified in
	 * the configure event is a maximum; the client cannot resize
	 * beyond it. Clients that have aspect ratio or cell sizing
	 * configuration can use a smaller size, however.
	 */
	XDG_TOPLEVEL_STATE_RESIZING = 3,
	/**
	 * the surface is now activated
	 * the surface is now activated
	 *
	 * Client window decorations should be painted as if the window
	 * is active. Do not assume this means that the window actually has
	 * keyboard or pointer focus.
	 */
	XDG_TOPLEVEL_STATE_ACTIVATED = 4,
	/**
	 * the surface’s left edge is tiled
	 *
	 * The window is currently in a tiled layout and the left edge is
	 * considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_LEFT = 5,
	/**
	 * the surface’s right edge is tiled
	 *
	 * The window is currently in a tiled layout and the right edge
	 * is considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_RIGHT = 6,
	/**
	 * the surface’s top edge is tiled
	 *
	 * The window is currently in a tiled layout and the top edge is
	 * considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_TOP = 7,
	/**
	 * the surface’s bottom edge is tiled
	 *
	 * The window is currently in a tiled layout and the bottom edge
	 * is considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_BOTTOM = 8,
};
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_LEFT_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_RIGHT_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_TOP_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_BOTTOM_SINCE_VERSION 2
#endif /* XDG_TOPLEVEL_STATE_ENUM */

#ifndef XDG_TOPLEVEL_WM_CAPABILITIES_ENUM
#define XDG_TOPLEVEL_WM_CAPABILITIES_ENUM
enum xdg_toplevel_wm_capabilities {
	/**
	 * show_window_menu is available
	 */
	XDG_TOPLEVEL_WM_CAPABILITIES_WINDOW_MENU = 1,
	/**
	 * set_maximized and unset_maximized are available
	 */
	XDG_TOPLEVEL_WM_CAPABILITIES_MAXIMIZE = 2,
	/**
	 * set_fullscreen and unset_fullscreen are available
	 */
	XDG_TOPLEVEL_WM_CAPABILITIES_FULLSCREEN = 3,
	/**
	 * set_minimized is available
	 */
	XDG_TOPLEVEL_WM_CAPABILITIES_MINIMIZE = 4,
};
#endif /* XDG_TOPLEVEL_WM_CAPABILITIES_ENUM */

/**
 * @ingroup iface_xdg_toplevel
 * @struct xdg_toplevel_interface
 */
struct xdg_toplevel_interface {
	/**
	 * destroy the xdg_toplevel
	 *
	 * This request destroys the role surface and unmaps the surface;
	 * see "Unmapping" behavior in interface section for details.
	 */
	void (*destroy)(struct wl_client *client,
			struct wl_resource *resource);
	/**
	 * set the parent of this surface
	 *
	 * Set the "parent" of this surface. This surface should be
	 * stacked above the parent surface and all other ancestor
	 * surfaces.
	 *
	 * Parent surfaces should be set on dialogs, toolboxes, or other
	 * "auxiliary" surfaces, so that the parent is raised when the
	 * dialog is raised.
	 *
	 * Setting a null parent for a child surface unsets its parent.
	 * Setting a null parent for a surface which currently has no
	 * parent is a no-op.
	 *
	 * Only mapped surfaces can have child surfaces. Setting a parent
	 * which is not mapped is equivalent to setting a null parent. If a
	 * surface becomes unmapped, its children's parent is set to the
	 * parent of the now-unmapped surface. If the now-unmapped surface
	 * has no parent, its children's parent is unset. If the
	 * now-unmapped surface becomes mapped again, its parent-child
	 * relationship is not restored.
	 *
	 * The parent toplevel must not be one of the child toplevel's
	 * descendants, and the parent must be different from the child
	 * toplevel, otherwise the invalid_parent protocol error is raised.
	 */
	void (*set_parent)(struct wl_client *client,
			   struct wl_resource *resource,
			   struct wl_resource *parent);
	/**
	 * set surface title
	 *
	 * Set a short title for the surface.
	 *
	 * This string may be used to identify the surface in a task bar,
	 * window list, or other user interface elements provided by the
	 * compositor.
	 *
	 * The string must be encoded in UTF-8.
	 */
	void (*set_title)(struct wl_client *client,
			  struct wl_resource *resource,
			  const char *title);
	/**
	 * set application ID
	 *
	 * Set an application identifier for the surface.
	 *
	 * The app ID identifies the general class of applications to which
	 * the surface belongs. The compositor can use this to group
	 * multiple surfaces together, or to determine how to launch a new
	 * application.
	 *
	 * For D-Bus activatable applications, the app ID is used as the
	 * D-Bus service name.
	 *
	 * The compositor shell will try to group application surfaces
	 * together by their app ID. As a best practice, it is suggested to
	 * select app ID's that match the basename of the application's
	 * .desktop file. For example, "org.freedesktop.FooViewer" where
	 * the .desktop file is "org.freedesktop.FooViewer.desktop".
	 *
	 * Like other properties, a set_app_id request can be sent after
	 * the xdg_toplevel has been mapped to update the property.
	 *
	 * See the desktop-entry specification [0] for more details on
	 * application identifiers and how they relate to well-known D-Bus
	 * names and .desktop files.
	 *
	 * [0] https://standards.freedesktop.org/desktop-entry-spec/
	 */
	void (*set_app_id)(struct wl_client *client,
			   struct wl_resource *resource,
			   const char *app_id);
	/**
	 * show the window menu
	 *
	 * Clients implementing client-side decorations might want to
	 * show a context menu when right-clicking on the decorations,
	 * giving the user a menu that they can use to maximize or minimize
	 * the window.
	 *
	 * This request asks the compositor to pop up such a window menu at
	 * the given position, relative to the local surface coordinates of
	 * the parent surface. There are no guarantees as to what menu
	 * items the window menu contains, or even if a window menu will be
	 * drawn at all.
	 *
	 * This request must be used in response to some sort of user
	 * action like a button press, key press, or touch down event.
	 * @param seat the wl_seat of the user event
	 * @param serial the serial of the user event
	 * @param x the x position to pop up the window menu at
	 * @param y the y position to pop up the window menu at
	 */
	void (*show_window_menu)(struct wl_client *client,
				 struct wl_resource *resource,
				 struct wl_resource *seat,
				 uint32_t serial,
				 int32_t x,
				 int32_t y);
	/**
	 * start an interactive move
	 *
	 * Start an interactive, user-driven move of the surface.
	 *
	 * This request must be used in response to some sort of user
	 * action like a button press, key press, or touch down event. The
	 * passed serial is used to determine the type of interactive move
	 * (touch, pointer, etc).
	 *
	 * The server may ignore move requests depending on the state of
	 * the surface (e.g. fullscreen or maximized), or if the passed
	 * serial is no longer valid.
	 *
	 * If triggered, the surface will lose the focus of the device
	 * (wl_pointer, wl_touch, etc) used for the move. It is up to the
	 * compositor to visually indicate that the move is taking place,
	 * such as updating a pointer cursor, during the move. There is no
	 * guarantee that the device focus will return when the move is
	 * completed.
	 * @param seat the wl_seat of the user event
	 * @param serial the serial of the user event
	 */
	void (*move)(struct wl_client *client,
		     struct wl_resource *resource,
		     struct wl_resource *seat,
		     uint32_t serial);
	/**
	 * start an interactive resize
	 *
	 * Start a user-driven, interactive resize of the surface.
	 *
	 * This request must be used in response to some sort of user
	 * action like a button press, key press, or touch down event. The
	 * passed serial is used to determine the type of interactive
	 * resize (touch, pointer, etc).
	 *
	 * The server may ignore resize requests depending on the state of
	 * the surface (e.g. fullscreen or maximized).
	 *
	 * If triggered, the client will receive configure events with the
	 * "resize" state enum value and the expected sizes. See the
	 * "resize" enum value for more details about what is required. The
	 * client must also acknowledge configure events using
	 * "ack_configure". After the resize is completed, the client will
	 * receive another "configure" event without the resize state.
	 *
	 * If triggered, the surface also will lose the focus of the device
	 * (wl_pointer, wl_touch, etc) used for the resize. It is up to the
	 * compositor to visually indicate that the resize is taking place,
	 * such as updating a pointer cursor, during the resize. There is
	 * no guarantee that the device focus will return when the resize
	 * is completed.
	 *
	 * The edges parameter specifies how the surface should be resized,
	 * and is one of the values of the resize_edge enum. Values not
	 * matching a variant of the enum will cause a protocol error. The
	 * compositor may use this information to update the surface
	 * position for example when dragging the top left corner. The
	 * compositor may also use this information to adapt its behavior,
	 * e.g. choose an appropriate cursor image.
	 * @param seat the wl_seat of the user event
	 * @param serial the serial of the user event
	 * @param edges which edge or corner is being dragged
	 */
	void (*resize)(struct wl_client *client,
		       struct wl_resource *resource,
		       struct wl_resource *seat,
		       uint32_t serial,
		       uint32_t edges);
	/**
	 * set the maximum size
	 *
	 * Set a maximum size for the window.
	 *
	 * The client can specify a maximum size so that the compositor
	 * does not try to configure the window beyond this size.
	 *
	 * The width and height arguments are in window geometry
	 * coordinates. See xdg_surface.set_window_geometry.
	 *
	 * Values set in this way are double-buffered. They will get
	 * applied on the next commit.
	 *
	 * The compositor can use this information to allow or disallow
	 * different states like maximize or fullscreen and draw accurate
	 * animations.
	 *
	 * Similarly, a tiling window manager may use this information to
	 * place and resize client windows in a more effective way.
	 *
	 * The client should not rely on the compositor to obey the maximum
	 * size. The compositor may decide to ignore the values set by the
	 * client and request a larger size.
	 *
	 * If never set, or a value of zero in the request, means that the
	 * client has no expected maximum size in the given dimension. As a
	 * result, a client wishing to reset the maximum size to an
	 * unspecified state can use zero for width and height in the
	 * request.
	 *
	 * Requesting a maximum size to be smaller than the minimum size of
	 * a surface is illegal and will result in an invalid_size error.
	 *
	 * The width and height must be greater than or equal to zero.
	 * Using strictly negative values for width or height will result
	 * in a invalid_size error.
	 */
	void (*set_max_size)(struct wl_client *client,
			     struct wl_resource *resource,
			     int32_t width,
			     int32_t height);
	/**
	 * set the minimum size
	 *
	 * Set a minimum size for the window.
	 *
	 * The client can specify a minimum size so that the compositor
	 * does not try to configure the window below this size.
	 *
	 * The width and height arguments are in window geometry
	 * coordinates. See xdg_surface.set_window_geometry.
	 *
	 * Values set in this way are double-buffered. They will get
	 * applied on the next commit.
	 *
	 * The compositor can use this information to allow or disallow
	 * different states like maximize or fullscreen and draw accurate
	 * animations.
	 *
	 * Similarly, a tiling window manager may use this information to
	 * place and resize client windows in a more effective way.
	 *
	 * The client should not rely on the compositor to obey the minimum
	 * size. The compositor may decide to ignore the values set by the
	 * client and request a smaller size.
	 *
	 * If never set, or a value of zero in the request, means that the
	 * client has no expected minimum size in the given dimension. As a
	 * result, a client wishing to reset the minimum size to an
	 * unspecified state can use zero for width and height in the
	 * request.
	 *
	 * Requesting a minimum size to be larger than the maximum size of
	 * a surface is illegal and will result in an invalid_size error.
	 *
	 * The width and height must be greater than or equal to zero.
	 * Using strictly negative values for width and height will result
	 * in a invalid_size error.
	 */
	void (*set_min_size)(struct wl_client *client,
			     struct wl_resource *resource,
			     int32_t width,
			     int32_t height);
	/**
	 * maximize the window
	 *
	 * Maximize the surface.
	 *
	 * After requesting that the surface should be maximized, the
	 * compositor will respond by emitting a configure event. Whether
	 * this configure actually sets the window maximized is subject to
	 * compositor policies. The client must then update its content,
	 * drawing in the configured state. The client must also
	 * acknowledge the configure when committing the new content (see
	 * ack_configure).
	 *
	 * It is up to the compositor to decide how and where to maximize
	 * the surface, for example which output and what region of the
	 * screen should be used.
	 *
	 * If the surface was already maximized, the compositor will still
	 * emit a configure event with the "maximized" state.
	 *
	 * If the surface is in a fullscreen state, this request has no
	 * direct effect. It may alter the state the surface is returned to
	 * when unmaximized unless overridden by the compositor.
	 */
	void (*set_maximized)(struct wl_client *client,
			      struct wl_resource *resource);
	/**
	 * unmaximize the window
	 *
	 * Unmaximize the surface.
	 *
	 * After requesting that the surface should be unmaximized, the
	 * compositor will respond by emitting a configure event. Whether
	 * this actually un-maximizes the window is subject to compositor
	 * policies. If available and applicable, the compositor will
	 * include the window geometry dimensions the window had prior to
	 * being maximized in the configure event. The client must then
	 * update its content, drawing it in the configured state. The
	 * client must also acknowledge the configure when committing the
	 * new content (see ack_configure).
	 *
	 * It is up to the compositor to position the surface after it was
	 * unmaximized; usually the position the surface had before
	 * maximizing, if applicable.
	 *
	 * If the surface was already not maximized, the compositor will
	 * still emit a configure event without the "maximized" state.
	 *
	 * If the surface is in a fullscreen state, this request has no
	 * direct effect. It may alter the state the surface is returned to
	 * when unmaximized unless overridden by the compositor.
	 */
	void (*unset_maximized)(struct wl_client *client,
				struct wl_resource *resource);
	/**
	 * set the window as fullscreen on an output
	 *
	 * Make the surface fullscreen.
	 *
	 * After requesting that the surface should be fullscreened, the
	 * compositor will respond by emitting a configure event. Whether
	 * the client is actually put into a fullscreen state is subject to
	 * compositor policies. The client must also acknowledge the
	 * configure when committing the new content (see ack_configure).
	 *
	 * The output passed by the request indicates the client's
	 * preference as to which display it should be set fullscreen on.
	 * If this value is NULL, it's up to the compositor to choose which
	 * display will be used to map this surface.
	 *
	 * If the surface doesn't cover the whole output, the compositor
	 * will position the surface in the center of the output and
	 * compensate with with border fill covering the rest of the
	 * output. The content of the border fill is undefined, but should
	 * be assumed to be in some way that attempts to blend into the
	 * surrounding area (e.g. solid black).
	 *
	 * If the fullscreened surface is not opaque, the compositor must
	 * make sure that other screen content not part of the same surface
	 * tree (made up of subsurfaces, popups or similarly coupled
	 * surfaces) are not visible below the fullscreened surface.
	 */
	void (*set_fullscreen)(struct wl_client *client,
			       struct wl_resource *resource,
			       struct wl_resource *output);
	/**
	 * unset the window as fullscreen
	 *
	 * Make the surface no longer fullscreen.
	 *
	 * After requesting that the surface should be unfullscreened, the
	 * compositor will respond by emitting a configure event. Whether
	 * this actually removes the fullscreen state of the client is
	 * subject to compositor policies.
	 *
	 * Making a surface unfullscreen sets states for the surface based
	 * on the following: * the state(s) it may have had before becoming
	 * fullscreen * any state(s) decided by the compositor * any
	 * state(s) requested by the client while the surface was
	 * fullscreen
	 *
	 * The compositor may include the previous window geometry
	 * dimensions in the configure event, if applicable.
	 *
	 * The client must also acknowledge the configure when committing
	 * the new content (see ack_configure).
	 */
	void (*unset_fullscreen)(struct wl_client *client,
				 struct wl_resource *resource);
	/**
	 * set the window as minimized
	 *
	 * Request that the compositor minimize your surface. There is no
	 * way to know if the surface is currently minimized, nor is there
	 * any way to unset minimization on this surface.
	 *
	 * If you are looking to throttle redrawing when minimized, please
	 * instead use the wl_surface.frame event for this, as this will
	 * also work with live previews on windows in Alt-Tab, Expose or
	 * similar compositor features.
	 */
	void (*set_minimized)(struct wl_client *client,
			      struct wl_resource *resource);
};

#define XDG_TOPLEVEL_CONFIGURE 0
#define XDG_TOPLEVEL_CLOSE 1
#define XDG_TOPLEVEL_CONFIGURE_BOUNDS 2
#define XDG_TOPLEVEL_WM_CAPABILITIES 3

/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CONFIGURE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CLOSE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CONFIGURE_BOUNDS_SINCE_VERSION 4
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_WM_CAPABILITIES_SINCE_VERSION 5

/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_PARENT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_TITLE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_APP_ID_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SHOW_WINDOW_MENU_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_MOVE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_RESIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MAX_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MIN_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MAXIMIZED_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_UNSET_MAXIMIZED_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_FULLSCREEN_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_UNSET_FULLSCREEN_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MINIMIZED_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_toplevel
 * Sends an configure event to the client owning the resource.
 * @param resource_ The client's resource
 */
static inline void
xdg_toplevel_send_configure(struct wl_resource *resource_, int32_t width, int32_t height, struct wl_array *states)
{
	wl_resource_post_event(resource_, XDG_TOPLEVEL_CONFIGURE, width, height, states);
}

/**
 * @ingroup iface_xdg_toplevel
 * Sends an close event to the client owning the resource.
 * @param resource_ The client's resource
 */
static inline void
xdg_toplevel_send_close(struct wl_resource *resource_)
{
	wl_resource_post_event(resource_, XDG_TOPLEVEL_CLOSE);
}

/**
 * @ingroup iface_xdg_toplevel
 * Sends an configure_bounds event to the client owning the resource.
 * @param resource_ The client's resource
 */
static inline void
xdg_toplevel_send_configure_bounds(struct wl_resource *resource_, int32_t width, int32_t height)
{
	wl_resource_post_event(resource_, XDG_TOPLEVEL_CONFIGURE_BOUNDS, width, height);
}

/**
 * @ingroup iface_xdg_toplevel
 * Sends an wm_capabilities event to the client owning the resource.
 * @param resource_ The client's resource
 * @param capabilities array of 32-bit capabilities
 */
static inline void
xdg_toplevel_send_wm_capabilities(struct wl_resource *resource_, struct wl_array *capabilities)
{
	wl_resource_post_event(resource_, XDG_TOPLEVEL_WM_CAPABILITIES, capabilities);
}

#ifndef XDG_POPUP_ERROR_ENUM
#define XDG_POPUP_ERROR_ENUM
enum xdg_popup_error {
	/**
	 * tried to grab after being mapped
	 */
	XDG_POPUP_ERROR_INVALID_GRAB = 0,
};
#endif /* XDG_POPUP_ERROR_ENUM */

/**
 * @ingroup iface_xdg_popup
 * @struct xdg_popup_interface
 */
struct xdg_popup_interface {
	/**
	 * remove xdg_popup interface
	 *
	 * This destroys the popup. Explicitly destroying the xdg_popup
	 * object will also dismiss the popup, and unmap the surface.
	 *
	 * If this xdg_popup is not the "topmost" popup, a protocol error
	 * will be sent.
	 */
	void (*destroy)(struct wl_client *client,
			struct wl_resource *resource);
	/**
	 * make the popup take an explicit grab
	 *
	 * This request makes the created popup take an explicit grab. An
	 * explicit grab will be dismissed when the user dismisses the
	 * popup, or when the client destroys the xdg_popup. This can be
	 * done by the user clicking outside the surface, using the
	 * keyboard, or even locking the screen through closing the lid or
	 * a timeout.
	 *
	 * If the compositor denies the grab, the popup will be immediately
	 * dismissed.
	 *
	 * This request must be used in response to some sort of user
	 * action like a button press, key press, or touch down event. The
	 * serial number of the event should be passed as 'serial'.
	 *
	 * The parent of a grabbing popup must either be an xdg_toplevel
	 * surface or another xdg_popup with an explicit grab. If the
	 * parent is another xdg_popup it means that the popups are nested,
	 * with this popup now being the topmost popup.
	 *
	 * Nested popups must be destroyed in the reverse order they were
	 * created in, e.g. the only popup you are allowed to destroy at
	 * all times is the topmost one.
	 *
	 * When compositors choose to dismiss a popup, they may dismiss
	 * every nested grabbing popup as well. When a compositor dismisses
	 * popups, it will follow the same dismissing order as required
	 * from the client.
	 *
	 * If the topmost grabbing popup is destroyed, the grab will be
	 * returned to the parent of the popup, if that parent previously
	 * had an explicit grab.
	 *
	 * If the parent is a grabbing popup which has already been
	 * dismissed, this popup will be immediately dismissed. If the
	 * parent is a popup that did not take an explicit grab, an error
	 * will be raised.
	 *
	 * During a popup grab, the client owning the grab will receive
	 * pointer and touch events for all their surfaces as normal
	 * (similar to an "owner-events" grab in X11 parlance), while the
	 * top most grabbing popup will always have keyboard focus.
	 * @param seat the wl_seat of the user event
	 * @param serial the serial of the user event
	 */
	void (*grab)(struct wl_client *client,
		     struct wl_resource *resource,
		     struct wl_resource *seat,
		     uint32_t serial);
	/**
	 * recalculate the popup's location
	 *
	 * Reposition an already-mapped popup. The popup will be placed
	 * given the details in the passed xdg_positioner object, and a
	 * xdg_popup.repositioned followed by xdg_popup.configure and
	 * xdg_surface.configure will be emitted in response. Any
	 * parameters set by the previous positioner will be discarded.
	 *
	 * The passed token will be sent in the corresponding
	 * xdg_popup.repositioned event. The new popup position will not
	 * take effect until the corresponding configure event is
	 * acknowledged by the client. See xdg_popup.repositioned for
	 * details. The token itself is opaque, and has no other special
	 * meaning.
	 *
	 * If multiple reposition requests are sent, the compositor may
	 * skip all but the last one.
	 *
	 * If the popup is repositioned in response to a configure event
	 * for its parent, the client should send an
	 * xdg_positioner.set_parent_configure and possibly an
	 * xdg_positioner.set_parent_size request to allow the compositor
	 * to properly constrain the popup.
	 *
	 * If the popup is repositioned together with a parent that is
	 * being resized, but not in response to a configure event, the
	 * client should send an xdg_positioner.set_parent_size request.
	 * @param token reposition request token
	 * @since 3
	 */
	void (*reposition)(struct wl_client *client,
			   struct wl_resource *resource,
			   struct wl_resource *positioner,
			   uint32_t token);
};

#define XDG_POPUP_CONFIGURE 0
#define XDG_POPUP_POPUP_DONE 1
#define XDG_POPUP_REPOSITIONED 2

/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_CONFIGURE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_POPUP_DONE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_REPOSITIONED_SINCE_VERSION 3

/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_GRAB_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_REPOSITION_SINCE_VERSION 3

/**
 * @ingroup iface_xdg_popup
 * Sends an configure event to the client owning the resource.
 * @param resource_ The client's resource
 * @param x x position relative to parent surface window geometry
 * @param y y position relative to parent surface window geometry
 * @param width window geometry width
 * @param height window geometry height
 */
static inline void
xdg_popup_send_configure(struct wl_resource *resource_, int32_t x, int32_t y, int32_t width, int32_t height)
{
	wl_resource_post_event(resource_, XDG_POPUP_CONFIGURE, x, y, width, height);
}

/**
 * @ingroup iface_xdg_popup
 * Sends an popup_done event to the client owning the resource.
 * @param resource_ The client's resource
 */
static inline void
xdg_popup_send_popup_done(struct wl_resource *resource_)
{
	wl_resource_post_event(resource_, XDG_POPUP_POPUP_DONE);
}

/**
 * @ingroup iface_xdg_popup
 * Sends an repositioned event to the client owning the resource.
 * @param resource_ The client's resource
 * @param token reposition request token
 */
static inline void
xdg_popup_send_repositioned(struct wl_resource *resource_, uint32_t token)
{
	wl_resource_post_event(resource_, XDG_POPUP_REPOSITIONED, token);
}

#ifdef  __cplusplus
}
#endif

#endif